I had these problems as well, but I caused them by myself as I rapidly clicked many times on previous comic. all buttons froze up for like 2 minutes, even though I was able to scroll to different desktops. Finally it loaded the comics from like 9 days ago (must've clicked more times but guess it registered only 9), and then all buttons started to work again.

Might be nice if you couldn't do this rapid clicking, and have to load one to be able to press again.
One thing I'm really missing is a way to jump to first comic for example. Cause I've made some new discoveries in comics that seem good, and I'd like to read them from the start. But no way in hell am I clicking back 3000 times for example